A device for removing foreign bodies from the digestive tract

Abstract

The application discloses a gastrointestinal foreign body taking-out device which comprises a fixing tube provided with a clamping cavity and a wrapping cavity, the wrapping cavity is arranged on one side of the clamping cavity, a clamping assembly is arranged in the clamping cavity, and a jaw in the clamping assembly extends out of the clamping cavity and enters the outside world; a wrapping assembly is arranged in the wrapping cavity, the wrapping assembly comprises an elastic framework and a wrapping film, the elastic framework is provided with a sliding part and a working part connected with the sliding part through a connecting part, the sliding part is slidably connected with a cavity wall of the wrapping cavity and can slide in the axial direction of the fixing tube to the outside world, when the working part is located in the wrapping cavity, the working part is located on the side away from the clamping cavity along the movement path of the sliding part, and the elastic framework is elastically deformed, and when the working part moves out of the wrapping cavity, the working part rotates to the side close to the clamping cavity along the movement path of the sliding part under the action of the elastic deformation of the elastic framework, and the wrapping film can wrap the jaw, so that the foreign body can be safely taken out.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of medical devices, in particular to a device for removing foreign matter in the digestive tract. BACKGROUND

[0002] Swallowing foreign matter refers to that a patient swallows a substance that cannot be digested unintentionally or intentionally. Some foreign matter can be naturally discharged out of the body along with the digestive tract, but for sharp foreign matter or foreign matter embedded in the digestive tract, it needs to be removed from the digestive tract in time, especially for some rusty nails, iron sheets and other foreign matter, which can greatly harm the esophageal wall or gastric mucosa, cause digestive tract ulcers, cause local mucosa to erode, and even have the risk of massive hemorrhage of the digestive tract. Therefore, when removing foreign matter from the digestive tract, the sharp foreign matter should be avoided from scratching the digestive tract.

[0003] In the existing clinical operation, the endoscopic forceps are used to remove the foreign matter in the digestive tract, and then the foreign matter is pulled out of the digestive tract through the endoscopic forceps. However, in this process, the foreign matter is easy to hide in the folds of the digestive tract, which is not convenient for the endoscopic forceps to clamp the foreign matter. Moreover, for some foreign matter with large size and sharpness, it cannot pass through the instrument channel of the endoscope, and can only be dragged in the digestive tract by the endoscopic forceps. In this process, the foreign matter is easy to damage the digestive tract. SUMMARY

[0004] In order to more safely and quickly remove the foreign matter in the digestive tract and avoid the damage of the foreign matter to the digestive tract tissue during the removal of the foreign matter, the application provides a device for removing foreign matter in the digestive tract.

[0005] A device for removing foreign matter in the digestive tract comprises a fixed tube provided with a clamping cavity and a wrapping cavity, the wrapping cavity is arranged on one side of the clamping cavity, a clamping assembly is arranged in the clamping cavity, a jaw in the clamping assembly extends out of the clamping cavity and enters the outside world, a wrapping assembly is arranged in the wrapping cavity, the wrapping assembly comprises an elastic framework and a wrapping film arranged on the elastic framework, the elastic framework is provided with a sliding part and a working part connected with the sliding part through a connecting part, the sliding part is slidingly connected with the cavity wall of the wrapping cavity and can slide in the axial direction of the fixed tube to the outside world, when the working part is located in the wrapping cavity, the working part is located on one side of the movement path of the sliding part away from the clamping cavity, and the elastic framework is elastically deformed, when the sliding part moves to make the working part leave the wrapping cavity, the working part rotates around the connecting part to one side of the movement path of the sliding part close to the clamping cavity under the action of the elastic deformation of the elastic framework, and the wrapping film can wrap the jaw.

[0006] After the foreign matter is clamped by the jaw, the elastic framework extends from the wrapping cavity, and the elastic framework rotates to the jaw under the action of its elasticity, so that the wrapping film connected with the elastic framework wraps the jaw and the foreign matter clamped by the jaw, preventing the digestive tract from being scratched by the foreign matter during the process of taking out the foreign matter, and the elastic framework has a certain elasticity, which can assist in expanding the wrinkles in the digestive tract to fully expose the foreign matter hidden in the wrinkles, and the jaw can easily clamp the foreign matter without the need for additional instruments to assist.

[0007] In an embodiment of the present application, the digestive tract foreign matter taking-out device further comprises a traction rope arranged in the fixed tube and in sliding connection with the fixed tube; the rotation path of the working part comprises a switching position, which is arranged on the side of the movement path of the sliding part close to the clamping cavity; when the working part is away from the wrapping cavity, the working part is located at the initial position, and when the wrapping film connected with the working part wraps the jaw, the working part is located at the working position; when the working part moves from the initial position to the switching position under the elastic action of the elastic framework, the traction rope gives the working part a pulling force to limit the rotation of the working part; when the working part rotates from the switching position to the working position, the traction rope gives the working part a pulling force to make the traction rope overcome the elastic force generated by the elastic deformation of the elastic framework to rotate to the working position, so as to wrap the jaw with the wrapping film.

[0008] The rotation angle of the working part can be controlled by the traction rope, so that the rotation angle of the working part is controllable, preventing the working part from being quickly opened under the action of the elastic force of the elastic framework to affect the situation that the jaw clamps the foreign matter; and the operator can control the rotation angle of the working part by the traction rope to push away the wrinkles, food and other interference matters near the foreign matter by the elastic framework with a specific angle to obtain a better operation space for operating the foreign matter.

[0009] In an embodiment of the present application, the traction rope comprises an operation segment and a traction segment, the operation segment is connected with the working part through the traction segment, and the operation segment is arranged on the side of the movement path of the sliding part close to the clamping cavity to be able to provide the working part with a pulling force close to the clamping cavity.

[0010] The operation segment is arranged on the side of the movement path of the sliding part close to the clamping cavity to be able to better provide the working part with a pulling force close to the clamping cavity.

[0011] In an embodiment of the present application, the wrapping cavity is provided with a first guide rail, the sliding part is connected with the first guide rail, the sliding part is provided with a first clamping structure, and the first guide rail is provided with a second clamping structure; when the working part is away from the wrapping cavity, the first clamping structure is clamped with the second clamping structure to limit the movement of the sliding part along the first guide rail.

[0012] In the manner that the first clamping structure is clamped with the second clamping structure to limit the movement of the sliding part along the first guide rail, when the working part rotates to the jaw, the movement of the sliding part on the first guide rail is prevented to affect the situation that the working part wraps the jaw.

[0013] In one embodiment of the present application, the inner wall of the clamping cavity is connected with a ring-shaped guide rail, the axial direction of the ring-shaped guide rail is parallel to the axial direction of the fixed tube; the clamping assembly comprises two clamping arms, the two clamping arms are pivotally connected through a first pivot shaft, the first pivot shaft is slidably connected with the ring-shaped guide rail, and the axial direction of the first pivot shaft is parallel to the radial direction of the ring-shaped guide rail.

[0014] In one embodiment of the present application, the inner wall of the clamping cavity is connected with a ring-shaped guide rail, the axial direction of the ring-shaped guide rail is parallel to the axial direction of the fixed tube; the clamping assembly comprises two clamping arms, the two clamping arms are pivotally connected through a first pivot shaft, the first pivot shaft is slidably connected with the ring-shaped guide rail, and the axial direction of the first pivot shaft is parallel to the radial direction of the ring-shaped guide rail.

[0015] In one embodiment of the present application, the cross section of the clamping cavity is circular.

[0016] In one embodiment of the present application, the clamping assembly comprises two clamping arms, the two clamping arms are pivotally connected through a first pivot shaft, the clamping arm comprises a clamping end and a control end, the two clamping ends form a jaw, and the first pivot shaft is arranged between the clamping end and the control end; the clamping assembly further comprises a driving member and two connecting members, the axial direction of the driving member is perpendicular to the axial direction of the first pivot shaft, the two connecting members are pivotally connected with the two ends of the driving member respectively, the driving member is arranged between the two control ends, the connecting member is slidably connected with the control end, the connecting member can rotate relative to the driving member in the rotation plane of the control end, and the driving member controls the opening and closing of the jaw when moving along the axial direction of the fixed tube.

[0017] In one embodiment of the present application, the cross section of the clamping cavity is circular.

[0018] In one embodiment of the present application, the clamping cavity is internally provided with a driving guide rail, the extension direction of the driving guide rail is parallel to the axial direction of the fixed tube, and the driving member is slidably connected with the driving guide rail.

[0019] In one embodiment of the present application, the connecting part is arc-shaped and can be elastically deformed, and the opening of the connecting part is arranged on the side close to the clamping cavity in the movement path of the sliding part.

[0020] In one embodiment of the present application, the wrapping film is a transparent film.

[0021] In one embodiment of the present application, the wrapping film is a transparent film.

[0022] The present application has at least the following technical effects:

[0023] 1. After the jaws grip the foreign object, the elastic skeleton extends from the encapsulation cavity. Under its own elasticity, the elastic skeleton rotates to the jaws, and the encapsulation membrane connected to the elastic skeleton wraps the jaws and the foreign object held by the jaws, preventing the digestive tract from being scratched by the foreign object during the removal process. In addition, the elastic skeleton has a certain degree of elasticity, which can help to open up the folds in the digestive tract, so that the foreign object hidden in the folds can be fully exposed. The jaws can easily grip the foreign object without the need for additional instruments.

[0024] 2. The rotation angle of the working part can be controlled by the traction rope, making the rotation angle of the working part controllable and preventing the working part from opening rapidly under the elastic force of the elastic frame, which would affect the clamping of foreign objects. Furthermore, the operator can use the traction rope to control the rotation angle of the working part and use the elastic frame at a specific angle to push away folds, food, and other interference objects near the foreign object that may affect the removal of the foreign object, thereby obtaining a better operating space to operate on the foreign object.

[0025] 3. By utilizing the elastic skeleton and the foldability of the wrapping membrane, a large area of ​​wrapping membrane can be set in the wrapping cavity, thereby using the elastic skeleton and wrapping membrane to wrap a large volume of foreign objects. Attached Figure Description

[0026] Figure 1 This is a schematic structural diagram of one embodiment of the present application;

[0027] Figure 2 This is a schematic structural diagram of one embodiment of the first guide rail in this application;

[0028] Figure 3 This is a schematic diagram of one embodiment of the clamping arm control terminal in this application;

[0029] Figure 4 This is a schematic diagram illustrating one embodiment of the driver in this application;

[0030] Figure 5 This is a schematic diagram of a structural embodiment of the jaws in this application when they are reduced in size;

[0031] Figure 6 This is a schematic diagram illustrating one embodiment of the elastic skeleton in this application;

[0032] Figure 7 This is a schematic structural diagram of one embodiment of the traction rope traction working part in this application;

[0033] Figure 8 This is a schematic structural diagram of one embodiment in which the working part of this application is located in the encapsulation cavity;

[0034] Figure 9is a structural schematic view of a schematic embodiment of the working part in the initial position in the present application;

[0035] Figure 10 is a structural schematic view of a schematic embodiment of the working part in the switching position in the present application;

[0036] Figure 11 is a structural schematic view of a schematic embodiment of the working part in the working position in the present application;

[0037] Figure 12 is a structural schematic view of a schematic embodiment of the connecting part in the present application.

[0038] In the drawings:

[0039] 101, fixed tube; 102, clamping cavity; 103, wrapping cavity; 104, first guide rail; 105, second clamping structure; 106, guide hole;

[0040] 201, clamping arm; 202, clamping end; 203, control end; 204, jaw; 205, driving piece; 206, connecting piece; 207, operation wire; 208, driving guide rail; 209, annular guide rail; 210, first pivot shaft; 211, annular guide rail matching part; 301, elastic framework; 302, sliding part; 303, connecting part; 304, working part; 305, wrapping film; 306, first clamping structure;

[0041] 401, traction rope; 402, operation section; 403, traction section. DETAILED DESCRIPTION

[0042] In order to have a clearer understanding of the technical features, objectives and effects of the present application, the specific embodiments of the present application will be described with reference to the drawings, wherein the same reference numerals represent the same or similar parts having the same function.

[0043] In this document, "schematic" means "serving as an example, instance or illustration", and any drawing, embodiment described as "schematic" in this document should not be interpreted as a more preferred or more advantageous technical solution.

[0044] In order to make the drawings simple, only the parts related to the present application are schematically shown in the drawings, which do not represent the actual structure of the product. In addition, in order to make the drawings simple and easy to understand, in some drawings, only one of the parts having the same structure or function is schematically shown, or only one of them is marked.

[0045] Please refer to Figures 1 to 12 to understand the present application.

[0046] Please refer toFigure 1 、 Figure 2 The device comprises a fixed tube 101 provided with a clamping cavity 102 and a wrapping cavity 103, the wrapping cavity 103 is arranged at one side of the clamping cavity 102, the clamping cavity 102 is provided with a clamping assembly, and the jaw 204 in the clamping assembly extends out of the clamping cavity 102 and enters the outside world.

[0047] Referring to Figures 1 to 3 In an embodiment of the present application, the clamping assembly comprises two clamping arms 201, the two clamping arms 201 are pivotally connected through a first pivot shaft 210, the clamping arm 201 comprises a clamping end 202 and a control end 203, the two clamping ends 202 form a jaw 204, and the first pivot shaft 210 is arranged between the clamping end 202 and the control end 203. Figure 3 The clamping assembly further comprises a driving member 205 and two connecting members 206, referring to The connecting member 206 is sleeved on the control end 203 and can slide along the control end 203, the axial direction of the driving member 205 is perpendicular to the axial direction of the first pivot shaft 210, the two connecting members 206 are respectively pivotally connected with two ends of the driving member 205, the driving member 205 is arranged between the two control ends 203, the connecting member 206 is slidably connected with the control end 203, the connecting member 206 can rotate in the rotation plane of the control end 203 relative to the driving member 205, and the driving member 205 controls the opening and closing of the jaw 204 when moving along the axial direction of the fixed tube 101.

[0048] Referring to Figure 4 、 Figure 5 Based on the direction in the figure, since the connecting member 206 is pivotally connected with the driving member 205, the connecting member 206 can rotate relative to the driving member 205 to adapt to the angle change of the control end 203 around the first pivot shaft 210, since the length of the driving member 205 is fixed, the two control ends 203 are connected with the connecting member 206, when the operation wire 207 drags the driving member 205 to move right away from the first pivot shaft 210, the two control ends 203 are close to each other, so that the two clamping ends 202 can be close to each other at the same time, and the jaw 204 becomes smaller, this design directly drives the clamping end 202 to move through the driving member 205, and the clamping end 202 can firmly clamp the foreign matter; when the driving member 205 approaches the first pivot shaft 210 to the left, the two control ends 203 are away from each other, the two clamping ends 202 are away from each other, the jaw 204 becomes larger, and the jaw 204 can clamp the foreign matter with a larger volume.

[0049] Referring to Figure 3In an embodiment of the present application, the clamping cavity 102 is provided with a driving guide rail 208, which is fixedly connected with the annular guide rail matching part 211 arranged in the clamping cavity 102. The extending direction of the driving guide rail 208 is parallel to the axial direction of the fixed tube 101. The driving member 205 is slidingly connected with the driving guide rail 208, so that the driving member 205 can stably move along the driving guide rail 208 to approach or move away from the first pivot shaft 210, and the driving guide rail 208 ensures that the clamping jaw 204 can be stably opened and closed, thereby stably clamping the foreign matter.

[0050] Referring to Figure 1 , Figure 2 , Figure 3 In an embodiment of the present application, the inner wall of the clamping cavity 102 is connected with an annular guide rail 209, and the axial direction of the annular guide rail 209 is parallel to the axial direction of the fixed tube 101. The clamping assembly includes two clamping arms 201, which are pivotally connected through the first pivot shaft 210. The first pivot shaft 210 is fixedly connected with the annular guide rail matching part 211, which is annular and coaxially arranged with the annular guide rail 209, and the annular guide rail matching part 211 is slidingly connected with the annular guide rail 209. The annular guide rail matching part 211 can rotate around the axis of the annular guide rail 209. The axial direction of the first pivot shaft 210 is parallel to the radial direction of the annular guide rail 209, so that when the annular guide rail matching part 211 rotates, the first pivot shaft 210 can rotate around the axis of the annular guide rail 209, thereby changing the angle of the clamping jaw 204 relative to the clamping cavity 102, and adjusting the angle of the clamping jaw 204 according to the position of the foreign matter to better clamp the foreign matter.

[0051] Referring to Figure 1 In an embodiment of the present application, the cross section of the clamping cavity 102 is circular to facilitate the rotation of the first pivot shaft 210 in the clamping cavity 102 to adjust the angle of the clamping jaw 204 relative to the fixed tube 101.

[0052] Referring to Figure 1 , Figure 6 , Figure 7 The wrapping cavity 103 is provided with a wrapping assembly, which includes an elastic framework 301 and a wrapping film 305 arranged on the elastic framework 301. The elastic framework 301 is provided with a sliding part 302 and a working part 304 connected with the sliding part 302 through a connecting part 303. The cavity wall of the wrapping cavity 103 is provided with a first guide rail 104, referring to Figure 2 The sliding part 302 is slidingly connected with the cavity wall of the wrapping cavity 103 and can slide in the axial direction of the fixed tube 101 to the outside. When the working part 304 is located in the wrapping cavity 103, the working part 304 is located on the side of the sliding part 302 away from the clamping cavity 102, referring to Figure 1And the elastic skeleton 301 placed in the wrapping cavity 103 is bent and elastically deformed, and has a tendency to rotate around the connecting part 303 towards the outlet of the fixed tube 101, and the cavity wall of the wrapping cavity 103 limits the rotation of the elastic skeleton 301; when the sliding part 302 moves to make the working part 304 away from the wrapping cavity 103, the working part 304 rotates around the connecting part 303 towards the side of the clamping cavity 102 along the movement path of the sliding part 302 under the action of the elastic deformation of the elastic skeleton 301, and the wrapping film 305 can wrap the jaws 204, so that after the foreign matter is clamped by the jaws 204, the wrapping film 305 can wrap the jaws 204 and the foreign matter, preventing the foreign matter from scratching the digestive tract during the taking-out process, and the wrapping film 305 can wrap the foreign matter dropped by the jaws 204, avoiding the case that the foreign matter falls back into the digestive tract when the foreign matter is pulled.

[0053] In an embodiment of the present application, the wrapping film 305 is a transparent film, so as to facilitate medical staff to observe the position of the foreign matter in the digestive tract through the wrapping film 305 during the taking-out process of the foreign matter, and to adjust the taking-out strategy in time to ensure the safety of the operation of the patient.

[0054] Referring to Figure 1 , Figure 7 In an embodiment of the present application, the digestive tract foreign matter taking-out device further comprises a traction rope 401 arranged in the fixed tube 101, and the traction rope 401 is in sliding connection with the fixed tube 101; the rotating path of the working part 304 comprises a switching position (as shown in the working part 304 position), and the switching position is arranged on the side of the movement path of the sliding part 302 close to the clamping cavity 102. Figure 10

[0055] Referring to Figure 8 , when the working part 304 is located in the wrapping cavity 103, the elastic skeleton 301 is elastically deformed and retracted in the wrapping cavity 103, and the wrapping film 305 connected with the working part 304 is also retracted in the wrapping film 305, and the inner wall of the wrapping cavity 103 limits the expansion of the elastic skeleton 301; when the sliding part 302 slides along the first guide rail 104 and moves towards the tube opening of the fixed tube 101, the working part 304 is away from the wrapping cavity 103, and the working part 304 is located in the initial position, referring to Figure 9 ​, the work part 304 has a tendency to move clockwise around the connecting part 303 under the elastic force of the elastic framework 301, when the work part 304 moves from the initial position to the switching position under the elastic force of the elastic framework 301, the traction rope 401 can give the work part 304 a pulling force to limit the rotation of the work part 304; at this time, the traction rope 401 gives the work part 304 a pulling force to limit the movement of the work part 304 to the left, so that the rotation angle of the work part 304 can be controlled according to the traction rope 401; when the work part 304 continues to rotate clockwise around the connecting part 303 under the elastic force of the elastic framework 301, the work part 304 reaches the switching position, see Figure 10 At this time, the elastic framework 301 does not deform elastically and returns to the natural state, and the elastic framework 301 no longer generates elastic force; the traction rope 401 can give the work part 304 a pulling force to continue rotating around the connecting part 303, so that the work part 304 continues to rotate clockwise until the work part 304 connected to the wrapping film 305 wraps the jaw 204, and the work part 304 is located at the working position, see Figure 11 Under the joint action of the traction rope 401 and the elastic framework 301, the wrapping film 305 wraps the jaw 204 and the foreign matter clamped by the jaw 204, that is, when the work part 304 rotates from the switching position to the working position, the traction rope 401 gives the work part 304 a pulling force, so that the traction rope 401 overcomes the elastic force generated by the elastic deformation of the elastic framework 301 to rotate to the working position to wrap the jaw 204 with the wrapping film 305; during the entire rotation process of the work part 304, the elastic framework 301 deforms elastically and generates elastic force because the traction rope 401 drives the work part 304 to move, so that the rotation angle of the work part 304 around the connecting part 303 can be controlled by using the pulling force of the traction rope 401 and the elastic force of the elastic framework 301, and the work part 304 with a certain angle can push away the interfering object to ensure that the wrapping film 305 can wrap the foreign matter.

[0056] See Figure 1 , Figures 8 to 11 In an embodiment of the present application, the traction rope 401 includes an operating section 402 and a traction section 403, the operating section 402 is connected to the work part 304 through the traction section 403, and the operating section 402 is arranged on one side of the movement path of the sliding part 302 close to the clamping cavity 102 to provide a pulling force close to the clamping cavity 102 to the work part 304; by arranging the operating section 402 on one side of the movement path of the sliding part 302 close to the clamping cavity 102 and connecting the operating section 402 to the work part 304 through the traction section 403, the traction rope 401 can more easily give the work part 304 a pulling force to rotate around the connecting part 303 to be close to the clamping cavity 102.

[0057] Those skilled in the art to which the present application pertains can understand that the traction ropes 401 in the present application can also be provided in two, one operation section 402 of the traction rope 401 is arranged on the side of the movement path of the sliding part 302 close to the clamping cavity 102, and the other operation section 402 of the traction rope 401 is arranged on the side of the movement path of the sliding part 302 away from the clamping cavity 102, the traction sections 403 of the two traction ropes 401 are connected with the working part 304, so as to adjust the tension of the two traction ropes 401, and realize the rotation of the working part 304 in different directions around the connecting part 303.

[0058] Referring to Figure 12 In an embodiment of the present application, the connecting part 303 is arc-shaped and can be elastically deformed, the opening of the connecting part 303 faces the side of the movement path of the sliding part 302 close to the clamping cavity 102, and the shape of the connecting part 303 is arranged so that the working part 304 can more easily reach the switching position.

[0059] Referring to Figure 1 、 Figure 2 、 Figure 12 In an embodiment of the present application, the wrapping cavity 103 is provided with a first guide rail 104, the sliding part 302 is connected with the first guide rail 104, the sliding part 302 is provided with a first clamping structure 306, the first clamping structure 306 is an elastic protrusion, the first guide rail 104 is provided with a second clamping structure 105, and the second clamping structure 105 is a groove; when the working part 304 moves away from the wrapping cavity 103, the first clamping structure 306 is clamped with the second clamping structure 105 to limit the movement of the sliding part 302 along the first guide rail 104, and in the manner that the first clamping structure 306 is clamped with the second clamping structure 105 to limit the movement of the sliding part 302 along the first guide rail 104, when the working part 304 rotates towards the jaw 204, the sliding part 302 is prevented from moving on the first guide rail 104, and the situation that the wrapping film 305 connected with the working part 304 wraps the jaw 204 is prevented from occurring, of course, the implementation manner of the first clamping structure 306 and the second clamping structure 105 has many kinds, for example, the first clamping structure 306 is a groove, and the second clamping structure 105 is an elastic protrusion, which will not be described here.

[0060] Those skilled in the art to which the present application pertains can understand that the driving member 205, the sliding part 302 and the traction rope 401 can be respectively connected with different operation lines to realize different functions of different components through the operation handle, which will not be described here.

[0061] It should be understood that although the present specification is described in terms of various embodiments, not every embodiment contains only one independent technical solution, and the specification is described in this way only for the sake of clarity, those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

[0062] The above detailed description set forth above in connection with the disclosure merely describes exemplary embodiments of the application and is not intended to limit the scope of the application. Variations and modifications to the disclosed embodiments can be effected without departing from the spirit of the application, and the scope of the application is intended to cover what is described in the claims and their equivalents.

Claims

1. A device for removing a foreign body from a digestive tract, characterized by comprising: The device comprises a fixed tube provided with a clamping cavity and a wrapping cavity, the wrapping cavity is arranged on one side of the clamping cavity, a clamping assembly is arranged in the clamping cavity, and a jaw of the clamping assembly extends out of the clamping cavity and enters the outside world; A wrapping assembly is arranged in the wrapping cavity, the wrapping assembly comprises an elastic framework and a wrapping film arranged on the elastic framework, the elastic framework is provided with a sliding part and a working part connected with the sliding part through a connecting part, the sliding part is in sliding connection with the cavity wall of the wrapping cavity and can slide in the axial direction of the fixed tube to the outside world; When the working part is located in the wrapping cavity, the working part is located on the side of the sliding part movement path away from the clamping cavity, and the elastic framework is elastically deformed; When the sliding part moves to make the working part leave the wrapping cavity, the working part rotates around the connecting part to the side of the sliding part movement path close to the clamping cavity under the action of the elastic deformation of the elastic framework, and the wrapping film can wrap the jaw; The device further comprises a traction rope arranged in the fixed tube, and the traction rope is in sliding connection with the fixed tube; The rotating path of the working part comprises a switching position, and the switching position is arranged on the side of the sliding part movement path close to the clamping cavity; When the working part leaves the wrapping cavity, the working part is located at an initial position, and when the wrapping film connected with the working part wraps the jaw, the working part is located at a working position; When the working part moves from the initial position to the switching position under the elastic action of the elastic framework, the traction rope gives the working part a pulling force to limit the rotation of the working part; When the working part rotates from the switching position to the working position, the traction rope gives the working part a pulling force, so that the traction rope overcomes the elastic force generated by the elastic deformation of the elastic framework and rotates to the working position to make the wrapping film wrap the jaw; The traction rope comprises an operation section and a traction section, the operation section is connected with the working part through the traction section, and the operation section is arranged on the side of the sliding part movement path close to the clamping cavity to be able to provide the working part with a pulling force close to the clamping cavity; The connecting part is arc-shaped and can be elastically deformed, and the opening of the connecting part faces the side of the sliding part movement path close to the clamping cavity.

2. The device according to claim 1, wherein the wrapping cavity is provided with a first guide rail, the sliding part is connected with the first guide rail, the sliding part is provided with a first clamping structure, and the first guide rail is provided with a second clamping structure; When the working part leaves the wrapping cavity, the first clamping structure is clamped with the second clamping structure to limit the movement of the sliding part along the first guide rail.

3. The device according to claim 1, wherein the inner wall of the clamping cavity is connected with an annular guide rail, and the axial direction of the annular guide rail is parallel to the axial direction of the fixed tube. ​ ​ The clamping assembly comprises two clamping arms which are pivotally connected through a first pivot shaft, the first pivot shaft is slidably connected with the annular guide rail, and the axial direction of the first pivot shaft is parallel to the radial direction of the annular guide rail.

4. The device according to claim 3, characterized in that, The cross section of the clamping cavity is circular.

5. The device according to claim 1, characterized in that, The clamping assembly comprises two clamping arms which are pivotally connected through a first pivot shaft, the clamping arms comprise clamping ends and control ends, the two clamping ends form the clamping jaw, and the first pivot shaft is arranged between the clamping ends and the control ends; The clamping assembly further comprises a driving member and two connecting members, the axial direction of the driving member is perpendicular to the axial direction of the first pivot shaft, the two connecting members are pivotally connected with the two ends of the driving member respectively, the driving member is arranged between the two control ends, the connecting members are slidably connected with the control ends, the connecting members can rotate relative to the driving member in the rotation plane of the control ends, and the driving member controls the opening and closing of the clamping jaw when moving along the axial direction of the fixed tube.

6. The device according to claim 5, characterized in that, A driving guide rail is arranged in the clamping cavity, the extending direction of the driving guide rail is parallel to the axial direction of the fixed tube, and the driving member is slidably connected with the driving guide rail.

7. The device according to claim 1, characterized in that, The wrapping film is a transparent film.

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